24164-19-0 3a,4,5,5a,6,7,8,9b-Octahydro-5a,9-dimethyl-3-methylenenaphtho(1,2-b)furan-2(3H)-one (3aS-(3aalpha,5abeta,9bbeta))- Arbusculin B Eudesma-4,11(13)-dien-12-oic acid, 6-alpha-hydroxy-, gamma-lactone Naphtho(1,2-b)furan-2(3H)-one, 3a,4,5,5a,6,7,8,9b-octahydro-5a,9-dimethyl-3-methylene-, (3aS-(3aalpha,5abeta,9bbeta))- gamma-Cyclocostunolide